Home / 3,707.45-5,115.78-2,215.02

Finding the Fourth Proportional to 3,707.45, 5,115.78 and 2,215.02

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Solution

The fourth proportional to 3,707.45, 5,115.78 and 2,215.02 is: 3,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.45 : 5,115.78 = 2,215.02 : x
  2. Step 2: Convert to fraction form
    3,707.45/5,115.78 = 2,215.02/x
  3. Step 3: Cross multiply
    3,707.45x = 5,115.78 × 2,215.02
  4. Step 4: Simplify right side
    3,707.45x = 11,331,555.02
  5. Step 5: Solve for x
    x = 11,331,555.02/3,707.45
  6. Step 6: Final answer
    x = 3,056.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.